<p>Tangatatau Rockshelter on Mangaia Island in the Southern Cook Islands, excavated by a multidisciplinary team in 1989-1991, produced one of the richest stratigraphic sequences of artifacts, faunal assemblages, and archaeobotanical materials in Eastern Polynesia. More than seventy radiocarbon dates provide a tight chronology from AD 1000 to European contact in about 1800. The faunal assemblage provides compelling evidence for dramatic reductions...